CS120 Barcelona Tunnel Comes to Light Case Study 20160224 ©2016 Lumileds Holding B.V. All rights reserved.

2

Results and Benefits

The greatest benefit to the lighting upgrade is significantly

improved visibility and therefore, driver safety. The high

color rendering (70) and cooler color temperature (4000K)

LED light provides far superior visibility, allowing drivers to

see “real” colors within the tunnel. In contrast, the old low

pressure sodium lamps (2000K, 20 CRI) caused everything

to look yellow and only provided one brightness level. The

T-Max configuration and layout is modeled to provide optimal

visibility along the Túnel de la Vila Olímpica Barcelona.

“We partnered with Lumileds to

provide luminaires that deliver

exceptional output, use 40% less

energy, and will last up to 25 years.”

— Eduardo Serna

Carandini

Many tunnels throughout Europe feature centerline tunnel

lighting. Unfortunately, when maintenance is required,

both lanes of traffic must be shut down. With the side-

based illumination, one lane of the Túnel de la Vila Olímpica

Barcelona can be kept open at all times.

Finally, the luminaire and LEDs deliver high reliability with

rated lifetime of 100,000 hours (25 years). If maintenance

of the driver is required in that period, it is performed

separately from the light module. The upgrade has reduced

the lighting electricity cost by 40%. Now that one tunnel has

been upgraded to T-Max LED lighting with LUXEON M LEDs,

Barcelona is receiving positive feedback from drivers.

Solution

With multiple years of experience in tunnel lighting, Carandini

brought a custom design to the tunnel. Working with Lumileds

and choosing the LUXEON M LED for its consistency of light

output, high reliability and ultrahigh efficacy, the Carandini

T-Max fixture provides 10,000 lm of light inside el Túnel

de la Vila Olímpica. The T-Max has 11 different optical

configurations to meet a variety of needs including lighting

from one side. At the entrance and exit of this 1.5 km (1 mile)

tunnel, stacked fixtures are used to provide 40,000 lm output.

The luminaires utilize 4000K color temperature at a color

rendering index of 70. The luminaires are evenly spaced for

maximum uniformity.

“Safety drives the design in tunnel

lighting. We can drastically improve

safety today by precisely modeling

conditions and providing the

exceptional light quality of LED lighting.

— Francesc Palma

Carandini

The T-Max luminaire is a completely sealed unit with separate

driver system that can be mounted together or separate from

the light module. In this tunnel, the light module is mounted

30 cm above the drivers, allowing improved heat dissipation

from the luminaire. Because the LEDs and other electronics

are fully protected in a sealed, IP66 rated housing, the fixtures

and drivers can be high-pressure spray washed as needed.

The Carandini T-Max

fixtures uses LUXEON M for

its consistency of light output,

high reliability and ultrahigh

efficacy.